Chapter 6, Problem 6.120CHP

(a)

Interpretation Introduction

Interpretation:

The given equation has to be balanced.

Concept introduction:

Balanced reaction is a chemical reaction in which number of atoms for each element in the reaction and the total charge are same on both reactant side and the product side.

Steps in balancing the information

• Step 1: Write the unbalanced equation
• Step 2: Find the coeffienct to balance the equation.
• The coeffienct should be reduced to the smallest whole number

(b)

Interpretation Introduction

Interpretation:

Mass in grams of $Bi$ that are needed to react with $150g$ of $WC{l}_6$ has to be identified.

Concept introduction:

• Molecular weight is the sum of atomic weight of all atoms in a molecule.
• The percent composition is the percent by mass of each element in a compound.
• Empirical formula gives the information about the smallest whole number ratio of atoms in a compound.
• Molecular formula gives information about the ratios of different atoms in a compound.
• $No:ofmoles=\frac{Mass\times 1mol}{Molarmass}$

(c)

Interpretation Introduction

Interpretation:

Mass in grams of $W_{6}C{l}_{12}$ that are produced from $175g$ of $Bi$ and $228g$ of $WC{l}_6$ has to be identified.

Concept introduction:

• Molecular weight is the sum of atomic weight of all atoms in a molecule.
• The percent composition is the percent by mass of each element in a compound.
• Empirical formula gives the information about the smallest whole number ratio of atoms in a compound.
• Molecular formula gives information about the ratios of different atoms in a compound.
• $No:ofmoles=\frac{Mass\times 1mol}{Molarmass}$